Quiz_Photosynthesis (2.9, 8.3)

Light dependent reactions use light energy to produce

• ATP and oxygen.

• carbon dioxide.

• water and oxygen.

• glucose.

Light independent reactions use ATP and H⁺ to fix _______ to make ______.

• oxygen; glucose

• carbon dioxide, glucose

• oxygen; water

• carbon dioxide; water

This graph could represent (check all that apply:

• The effect of light intensity on the rate of photosynthesis.

• The effect of carbon dioxide concentration on the rate of photosynthesis.

• The effect of temperature on the rate of photosynthesis.

What is used to reduce NADP in the light dependent reactions of photosynthesis?

• Conversion of ATP into ADP +P_i

• Electrons from photosystem I

• Protons from the thylakoid space

• Oxygen from the photolysis of water

Where does photoactivation of electrons take place

• Photosystems I and II

• Photosystem I only

• Photosystem II only

• Electron Transfer Chain

What supplies the electrons that are lost in PS I?

• the electrons from PS II
• water
• glucose
• oxygen

Which of the following molecules is not needed for the Calvin Cycle?

• CO₂
• ATP
• NADPH
• H₂O

Where does the carbon come from that is used to form glucose?

• The soil
• CO₂ in the air
• From other carbohydrates
• Calvin Cycle

The light reactions occur in the ________ and the dark reactions take place in the ________.

• Chloroplast / thylakoid membrane
• stroma / thylakoid
• mesophyl / stomata
• thylakoid membrane / stroma

When oxygen is released as a result of photosynthesis, it is a direct by-product of

• reducing NADP+
• splitting water molecules
• chemiosmosis
• electron transfer in photosystem II and I